linux-kernel - Re: [PATCH] drm/amd/amdgpu: fix potential memleak

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Date:   Mon, 15 Nov 2021 10:56:28 -0500
From:   Felix Kuehling <felix.kuehling@....com>
To:     Bernard Zhao <bernard@...o.com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Hawking Zhang <Hawking.Zhang@....com>,
        John Clements <john.clements@....com>,
        Jonathan Kim <jonathan.kim@....com>,
        Kevin Wang <kevin1.wang@....com>,
        Tian Tao <tiantao6@...ilicon.com>,
        Evan Quan <evan.quan@....com>, shaoyunl <shaoyun.liu@....com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/amd/amdgpu: fix potential memleak

Am 2021-11-14 um 9:58 p.m. schrieb Bernard Zhao:
> In function amdgpu_get_xgmi_hive, when kobject_init_and_add failed
> There is a potential memleak if not call kobject_put.
>
> Signed-off-by: Bernard Zhao <bernard@...o.com>

Reviewed-by: Felix Kuehling <Felix.Kuehling@....com>


> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
> index 0fad2bf854ae..567df2db23ac 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
> @@ -386,6 +386,7 @@ struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev)
>  			"%s", "xgmi_hive_info");
>  	if (ret) {
>  		dev_err(adev->dev, "XGMI: failed initializing kobject for xgmi hive\n");
> +		kobject_put(&hive->kobj);
>  		kfree(hive);
>  		hive = NULL;
>  		goto pro_end;